Betamethasone + Gentamicin: Uses, Dosage, Side Effects & Brands | MedexInfo
Betamethasone + Gentamicin
Rx Only
Therapeutic ClassCorticosteroid + Aminoglycoside Antibiotic
Common DoseApply 2–3 times daily
Max / 24hAs per physician instruction
PregnancyCategory C (topical), consult physician
Indications ▼
Inflammatory skin conditions (eczema, dermatitis) with secondary bacterial infection
Ophthalmic infections with inflammation (eye drops)
Otitis externa with inflammation (ear drops)
Mechanism & Pharmacokinetics ▼
Mechanism: Betamethasone reduces inflammation, erythema, and pruritus via corticosteroid action. Gentamicin inhibits bacterial protein synthesis by binding to 30S ribosomal subunit.
Pharmacokinetics: Minimal systemic absorption when applied topically; gentamicin absorption may occur through broken skin or mucosa; primarily excreted unchanged in urine if absorbed systemically.
Dosage & Administration ▼
| Patient Category | Recommended Dose | Max / 24h |
|---|---|---|
| Adults & Children (≥2 yr) | Apply thin layer 2–3 times daily | As directed by physician |
| Ophthalmic | 1–2 drops in affected eye(s) 3–4 times daily | Follow prescription |
| Otic | 4–5 drops in affected ear 2–3 times daily | Follow prescription |
Do not cover treated skin unless directed. Avoid contact with eyes unless formulation is for ophthalmic use.
Side Effects ▼
Local irritation, burning, stinging, itching
Allergic reactions: rash, swelling, erythema
Prolonged use: skin thinning, telangiectasia, secondary fungal infections
Rare systemic effects if absorbed: corticosteroid-related effects or nephrotoxicity (gentamicin)
Contraindications ▼
Hypersensitivity to betamethasone, gentamicin, or formulation excipients
Viral, fungal, or tuberculosis skin infections unless treated
Ophthalmic or otic use: perforated tympanic membrane (for ear drops) or corneal ulcers (for eye drops)
Drug Interaction ▼
Other topical corticosteroids or aminoglycosides: monitor additive effects
Systemic nephrotoxic drugs if gentamicin absorbed: monitor kidney function
Pregnancy & Lactation ▼
Use only if benefits outweigh risks; topical use generally safer
Consult physician before breastfeeding
Clinical / Research Summary ▼
Anti-inflammatory & Antibacterial Effect: Combines corticosteroid anti-inflammatory effect with gentamicin antibacterial activity for secondary infections.
Topical Advantage: Minimal systemic absorption reduces risk of systemic toxicity.
Clinical Studies: Effective in reducing erythema, pruritus, and bacterial colonization in dermatitis and otitis externa.
Safety: Short-term use is generally safe; prolonged use requires monitoring for skin atrophy and secondary infections.
Patient Counseling Points ▼
Application: Apply thin layer only to affected area; avoid eyes unless ophthalmic formulation
Duration: Follow physician instructions; do not use longer than prescribed
Side effects: Report irritation, rash, or signs of infection
Pregnancy & lactation: Use only under medical advice
Storage: Keep in original container; protect from heat and moisture
Storage & Handling ▼
Store at 20–25°C; protect from light and moisture
Keep out of reach of children
Brand Names (Bangladesh & Global) ▼
Bangladesh (Local Brands):
Global / International Brands:
Betagen
Betagenta
Betnesol-G
Medical Disclaimer: This clinical summary is for informational purposes only. Always follow guidance from a qualified healthcare professional for dosage, interactions, and use.
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